About ~ほど

To say 'about' as in "about a week" or to show an approximate degree of something, use ~ほど

１週間ほど
isshuu kan hodo
About a week

駅は１０キロほどさきです。
eki wa jukkiro hodo saki desu.
The train station is about 10 kilometers ahead.

これは５，０００円ほどで買えます。
kore wa go sen en hodo de kaemasu.
This can be bought for about 5000 yen.